Year	Number
1996	33.668342590332
1998	35
2000	32.3383102416992
2002	32.3383102416992
2003	32.3383102416992
2004	31.730770111084
2005	35.8851661682129
2006	29.6650714874268
2007	32.0574150085449
2008	34.1346168518066
2009	28.9099521636963
2010	28.9099521636963
2011	28.1690139770508
2012	26.7605628967285
2013	30.9859161376953
2014	31.25
2015	30
2016	29.5238094329834
2017	26.1904754638672
2018	21.9047622680664
2019	22.380952835083
2020	20.9523811340332
2021	23.3333339691162
2022	24.5283012390137